Blind firing at unseen targets won't show info about hits and "Really attack?" query

[Night-Pryanik]

Summary

SUMMARY: Interface "Blind firing at unseen targets won't show info about hits and "Really attack?" query."

Purpose of change

Firing at unseen targets should not show you messages like "Good hit" or "Critical!".
Firing at unseen non-hostile NPCs should not show you "Really attack?" query.

Describe the solution

Added check for visibility of targets prior to printing messages and queries.

Describe alternatives you've considered

None.

Testing

• Fired at tile which unseen debug monster stands on - no more messages like "Good hit" or "Critical!".
• Fired at tile which unseen non-hostile NPC stands on - no more "Really attack?" query.

Additional context

None.